Digital cameras and digital photography

Digital cameras and various aspects of digital photography

With the proliferation of digital cameras, photography has become easier and more popular. Nowadays most of the high quality mobile phones can take good quality pictures. At the same time, if the interest increases, digital cameras can be bought at low prices. Once you buy a camera, there is no cost or hassle like in the days of film.

Clicking the camera takes the picture. Are all the pictures the same? Or is everyone's picture the same quality?

Certainly not. For some, photography is a hobby, for others photography is an addiction, for others it is a profession. Whatever it is, the relationship between good photography and knowing about camera and photography. Let's take a look at the commonalities of digital cameras and photography.

Different types of cameras according to sensors and size

In a film, as in the case of a film camera, an electronic object called a sensor works in a digital camera. According to the camera it is big-small in size. There is no reason to doubt that the bigger the image the better the sensor. Mobile phone sensors are smaller, larger on point-and-shoot cameras, larger on primary (entry level) LLR cameras, larger on midrange SLR cameras, and larger on professional cameras. Normally a professional camera has a sensor equivalent to 35mm film, so it has a value close to the quality of the film. This sensor is called full-frame.

There are cameras with bigger sensors than fullframes. These are used for special or ultra-professional purposes. You may not need to know much about them.

So, the mobile phone camera is the most backward in terms of camera quality, no matter how much publicity is given. No matter how many megapixels.

The next camera is called point and shoot camera. Usually the size of their sensors is 1 / 2.3 inches. Cameras like Canon PowerShot, Nikon Coolpix, Sony Cybershot, Panasonic Lumix etc. In size they can range from as small as a SLR to a book pocket. Of course the size varies according to the power of the lens and other factors.

The entry level SLR camera sensor is called Micro Four Third Sensor. The size of these cameras is a bit large. Their lenses can be changed. Cameras like Canon's Digital Rebel, Nikon's D3100, Sony Alpha A360 etc.

Another type of camera is made using the Micro Four Third Sensor. It also allows you to change the lens like SLR. The difference is, there is no optical viewfinder like SLR. The result is smaller in size. Panasonic, Olympus, Sony have such cameras.

Midrange SLR cameras are advanced from entry level, more convenient, more expensive. Apart from the sensors, there are some other differences (to be mentioned later) in these cameras. Canon 6D, Nikon D90 etc. are the cameras of this stage.

Fullframe cameras are called direct professional cameras. Canon's Eos Mark, Nikon's D700, etc. are cameras of this stage.

What megapixels do for a camera

You must know the meaning of the word mega. 1 kg per 1 thousand, 1 mega per 1 thousand kg. That means 1 megapixel means where there are 1 million pixels. When the camera mentions 5 megapixels, it means that the image taken by that camera will have 5 million pixels.

Compare the pixels with the dots placed side by side. The more dots are placed, the more space will be required. Therefore, the larger the megapixels, the larger the image size.

The most common misconception about megapixels is that if they increase, the image quality will improve. In fact, megapixels have nothing to do with image quality. Normally an 8 megapixel sensor is enough for 8-10 inch prints. Those who take pictures to make huge billboards are different.

What exactly is zoom? How much is needed for a camera?

Zoom with the camera lens is an important sound. Here's how far you can take a picture. Calculations are expressed in millimeters. It has two values, the closest measure is called wide and the farthest measure is called telephoto. Wide angle shows more of the front view, this tends to get smaller in telephoto, resulting in a smaller part. For example 25-250mm, it means 25mm in wide angle, 250mm in telephoto. It can be written as 10x. X means the multiplier of the value of wide angle. There are currently 35x (640mm) point-and-shoot cameras (Canon SX30IS).

The zoom that has been talked about for so long is the lens. There is also another thing called digital zoom. Software does this. If you want to get a good quality picture, it is better to keep it out of the calculation.

How much zoom camera you will use depends on the type of image. If you have a hobby of taking pictures of birds, then the more the better. If you need to take pictures of family, nature, etc., then you don't need much zoom. The better the picture of the flower from near, the better the picture from telephoto.

In SLR cameras, one lens can be opened and another can be fitted. So users use different types of lenses from wide to super telephoto. You need to zoom in as far as you want to take pictures (300mm +). Inexpensive SLR cameras are provided with 18-55mm lenses for normal operation as a kit lens. Experts say 75mm is needed for a good portrait. For this 65 mm prime lens is available. Some use a 135mm or 200mm lens.

ISO, aperture, shutterspeed for a Camera

The light that enters the camera's sensor while taking pictures creates a digital image according to the front view. The amount of light the sensor will work on is expressed by a number called ISO. For example, suppose a good quality picture is available at 100 ISO in moderate light. If you use ISO 50 there, you will get less light in the picture. And if you use 200, you will get extra light. Generally, if there is less light, more ISO is used, if there is more light, there is less. You can adjust the task in manual mode, or you can adjust the camera manually.

On the way to the light sensor through the lens, a window-like part called aperture has to be crossed. The larger the aperture (the more windows open) the more light goes in, and the more light there is, the more it is opened to control. Is expressed by the number of apertures. Such as 4, 5.6, 11 etc. Smaller numbers mean larger apertures (more light) and larger numbers mean smaller apertures.

Shutter speed controls how long the light will work. If there is more light, the necessary light for taking pictures is available in a short time. So you have to keep the shutter speed high. If there is less light, you have to reduce the shutter speed and take more light. A term called exposure is used to mean the amount of light. More exposure means more there, less money less light. Is expressed in seconds. 1/400 means one-fourth of a second.

You can set the shutter speed or adjust the camera according to the situation.

Good combination of ISO, Aperture and Shutterspeed are available. These three changes are made in manual mode only. Only highly skilled photographers do that. Others specify one or two, as well as the appropriate setting camera.

Although the subject of light is mentioned here, there are various uses of aperture, shutterspeed etc. You have to look at it to get a good picture in different situations. That will happen in the future.

Auto, preset and manual setting for a camera

The camera manages all the settings in auto mode. Your advantage is that you will get a good picture without worrying about anything at all. Having trouble,

See the example of shutter speed. You are taking pictures of flying birds. If the shutter speed is high, a clear picture of the wing can be found. When the shutter speed is reduced, the more the wings move, the more blurred the part will be when taking pictures. Which one do you want? Of course one at a time. When taking a picture of a moving car, once you want to show it has speed, other times you want to show all the parts of the car clearly. This may not be the case in auto mode.

So, you will get a fairly good picture in auto mode, there is no such thing as your choice.

This is the setting of the role preset. Pictures of people, pictures of objects taken at close range, pictures of plants and the sky, pictures of the night are provided with a convenient setting camera. Your job is to turn the dial and set it when needed. If you use the right preset, you will always get good quality pictures.

And if you want innovation, you want complete freedom in photography, then manual mode. You will have the opportunity to use that setting exactly where it is needed. The matter is not as complicated as it seems. You can see the ISO, aperture, shutter speed etc. by going to the auto or preset mode of the camera. You can also make the necessary changes to the manual mode to match.

What kind of camera to use

Know the various aspects of digital camera. What kind of camera would you buy if you went to buy a camera?

There is definitely a price relationship with buying. If possible you can choose the most expensive camera as much as possible. Here are the things to consider:

Ensure maximum use of the camera. You bought the best giant camera but left it at home for fear of being carried away. Certainly not. In that case choose a camera that can always be kept in the pocket. Ordinary point-and-shoot cameras may be enough to take pictures of family, picnics. Such a good camera is available in Bangladesh for 10 to 20 thousand rupees.

If you are interested in photography, starting from taking pictures while traveling to different places, you can go for Superzum camera. Such a camera will be available for 20 to 30 thousand rupees.

And if you want to be a perfect photographer, if you want the best quality pictures, of course SLR. Primary quality SLR will be available in 40 thousand, medium quality camera is around 1 lakh. Those looking for a better camera may not need advice.

A good camera has a good relationship with a good lens, image processor, etc. So it is safe to buy a camera from a famous company. Canon and Nikon are among the best camera makers. Apart from this, Sony, Panasonic, Fujifilm, Samsung, Pentax can look at them.